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Hi - Does anyone have any knowledge about Gr37 Flap Valves please?
I've settled on the Speidel FO tanks for fermentation in my distillery configuration.
I'm thinking of using the Gr37 Flap Valve in order to use a rouser for mixing in the molasses, then at the end I can use the valve to fit a racking arm. So I'll only need 1 rouser and 1 racking arm irrespective of how many vessels I have because the flap valve allows insertion and removal of tools whilst the vessel is full of liquid. I also want to be able to heat the wash. I have found "wine makers" elements (1KW) which come with a thermostat built in to the element and fit to the Gr37 flap valve. These are expensive however, and I'd prefer to use 5KW boiler elements (e.g. Camco), initially at full power to heat the water in the fermenter, and then in a secondary phase having it pegged back to 1KW to keep the rum wash at a good working temperature (with a PID controller controlling the switching on/off of that 1KW power).
I'm aware we normally require tri-clamp fitting with an appropriate element guard for fitting of these elements, but can they be made to fit a Gr37 flap valve too? If so, I've got a solution for the fermentation piece :-) ...